While I tend to agree with this, if you're going to crop the jacket a bit, it shouldn't be overly slim fitting. Otherwise it looks like you're wearing a kid's jacket. I personally think MrTony92's fit is ideal.

It's good for your everyday wear, but if you plan on wearing your jacket hard, I would go with cow or goat. The cow in particular is much thicker and thus more likely to take a beating. If you're not concerned about texture, cow or goat would be good options. If not, get the lamb - there's a reason people here rave about it.